92706 / 12506 MS OT B8-7046 No.A0205-1/5

LA1654C

Overview

The LA1654C time code reception IC receives long-wave time standard broadcasts (such as the Japanese JJY and

German DCF77 standards) and detects and outputs the time code superposed on the long-wave signal.

Applications can automatically correct their clock's time setting by using the time code received by the LA1654C.

Note that the LA1654C is a bare chip product that is not packaged.

Functions

• RF amplifier, rectifier, detector, time code output, and standby circuit.

Features

• Low-voltage operation (operating VCC as low as 1.5V).

• Standby mode current drain less than or equal to 0.05µA.

Japan : JJY 40/60kHz

Germany : DCF77 77.5kHz

Specifications

Maximum Ratings at Ta = 25

°C

Parameter

Symbol

Conditions

Ratings

Unit

Maximum supply voltage

VCC max

5.0

V

Allowable power dissipation

Pd max

Ta ≤ 70

°C

10

mW

Operating temperature

Topr

-20 to +70

°C

Storage temperature

Tstg

-40 to +125

°C

Operating Conditions at Ta = 25°C

Ratings

Parameter

Symbol

Conditions

min

typ

max

Unit

Recommended supply voltage

VCC

1.5

3.0

V

Operating supply voltage range

VCC op

1.1

3.6

V

Ordering number : ENA0205

Monolithic Linear IC

Time Code Reception IC

Any and all SANYO Semiconductor products described or contained herein do not have specifications

that can handle applications that require extremely high levels of reliability, such as life-support systems,

aircraft's control systems, or other applications whose failure can be reasonably expected to result in

serious physical and/or material damage. Consult with your SANYO Semiconductor representative

nearest you before using any SANYO Semiconductor products described or contained herein in such

applications.

SANYO Semiconductor assumes no responsibility for equipment failures that result from using products

at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition

ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor

products described or contained herein.